@Jansn: hosted the server on my own, so I'll try that if I can locate the files you mentioned @benjamg: thx 4 the additional info! a challenge is not that much of a problem - if its too hard, we can adjust the settings. R Reconnecting works, correct. But after a couple of minutes (even seconds) the problem is as bad as prior to reconnecting; so especially within the first "contracts" its not a very suitable solution for us :/